Manejo de pragas e doen?as na produ??o integrada e convencional de pêssegos

摘要

The Integrated Production of Peach (IPP) is being developed in Pelotas, Rio Grande do Sul, since the year 1999, with the objective to evaluate agronomically the Integrated Production (IP) system compared with Conventional Production (CP), in peach orchard 'Diamante'. The data of five harvests periods (1999-2003) and the evaluations were: damages for pests: oriental fruit moth, fruit flies, maize weevil and white peach scale; diseases: rotting, bacteria, scab and others; number of chemicals applications. The damages for oriental fruit moth were 1. 11% and 1. 69%, in IP and CP system, respectively. The damages of maize's weevil, was 2. 12% in IP and 0. 86% in the CP. In the IP system, the percentage of fruits with rooting was 26. 27% and in the CP it was 30. 55%, being the biggest cause of the losses in the orchards. The scab occurrence had risen in the CP, in 2003, reaching 33. 82% of the fruits analyzed. The number of chemicals treatments was bigger in the CP, in 1999 and 2000, later on there were similarity in the treatments applied in both systems, IP and CP. The evaluation of the results showed that the IP system was superior to the CP system, when those parameters were compared, indicating that it is possible to handle the peach orchards according to the Integrated Production.